Practice Lenz’s Law - 1.2 | Chapter 5: Electromagnetic Induction and Alternating | ICSE Class 12 Physics
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does Lenz’s Law state?

💡 Hint: Think about how the induced action responds to changes in a magnetic field.

Question 2

Easy

What does the negative sign in Faraday's law signify?

💡 Hint: Recall what Lenz’s Law tells us about opposing forces.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does Lenz's Law state about induced current?

  • It flows in the same direction as the magnetic flux.
  • It flows in a direction that opposes the change.
  • It has no effect on magnetic flux.

💡 Hint: Focus on the opposing nature of the induced effects.

Question 2

True or False: The negative sign in the equation for induced emf represents Lenz's Law.

  • True
  • False

💡 Hint: Think about how this relates to conservation in systems.

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Challenge Problems

Push your limits with challenges.

Question 1

A magnetic field is decreasing rapidly in a copper coil. Describe the direction of the induced current and justify your answer using Lenz's Law.

💡 Hint: Consider how Lenz's Law articulates the relationship between flux change and current direction.

Question 2

In an electric motor, the coil rotates in a magnetic field. If the rotation speed is suddenly doubled, analyze the effect of Lenz's Law on the induced current.

💡 Hint: Think about what happens when there is a rapid change in motion and how the current reacts.

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